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Home >> Oldsmobile >> 1988 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Multi-Port >> Trouble Shooting >> Symptoms >> Poor Fuel Economy

Poor Fuel Economy

  1. Check air filter. Check fuel pressure. See appropriate A-7 FUEL SYSTEM DIAGNOSIS CHART in COMPUTERIZED ENGINE CONTROL section. Check ignition system and ignition timing.
  2. Verify engine reaches normal operating temperature. Check TCC operation. Check exhaust system for restrictions. Check induction system and crankcase for air leaks. Check for vacuum leaks.
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